Answer:
x ≈ -7.73 , - 4.27
Step-by-step explanation:
x² + 12x + 33 = 0 ( subtract 33 from both sides )
x² + 12x = - 33
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(6)x + 36 = - 33 + 36
(x + 6)² = 3 ← take square root of both sides )
x + 6 = ± ( subtract 6 from both sides )
x = - 6 ±
Then
x = - 6 - ≈ - 7.73 ( to the nearest hundredth )
x = - 6 + ≈ - 4.27 ( to the nearest hundredth )
The period is the length of one cycle. The frequency is the number of cycles of a periodic function that occur therefore frequency is the answer.
Answer: B. X =
Step-by-step explanation:
sec(45) = hyp/12
12sec(45) = hyp
hyp = 16.9
cot(60) = x/16.9
16.9cot(60) = x
x = 9.7
B. X =
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